Variables

Variables in the source code are Identifier named memory cells in RAM (SRAM) or eeprom (eRAM). You can assign values to them and readout their value somewhere else. Detailed description (Wikipedia)

Variables are declared by Dim (RAM) and/or eeDim (eeprom).

Variables have Object features:

features of numeric standard variables (boolean, byte, word, integer, long, single, ..)
Name	Description	Type	read/write
.0-x¹⁾	Bit n of the variable value	boolean	read+write
.LowNibble	Low-Nibble of the variable value	byte	read+write
.HighNibble	High-Nibble of the variable value	byte	read+write
.Nibblen	Nibble n (1-8) of the variable value	byte	read+write
.Byten²⁾	Byte n (1-4) of the variable value	byte	read+write
.LowByte³⁾	Low-Byte of the variable value	byte	read+write
.HighByte⁴⁾	High-Byte of the variable value	byte	read+write
.LowWord⁵⁾	lower Word of the variable value	word	read+write
.HighWord⁶⁾	higher Word of the variable value	word	read+write
.Reverse⁷⁾	reverse the Byte order, see also Ce16(), Ce32()	word, long	read
.Addr⁸⁾	Address of the variable ⁹⁾	word	read
.Ptr¹⁰⁾	Address of the memory blocks	word	read
.SizeOf	Read the number of Bytes the variable reserves.	byte	read
Methods of Byte and Word arrays
Name	Description
.Sort	Sort array data in ascending order (very fast sorting algorithm)

The elements Struct inherit Methods/Attributes.

The data type String and MemoryBlock have further Methods and Attributes.

Variables must be declared before they can be accessed. Variables store data values of their Data Type. See also: Dim, Chapter "Visibility of Variables"

A ssen above, you can access individual bytes for read and write operations. You may also access a Bit via another variable which has that Bit number: Example:

var = var1.var2
var1.var2 = Expression

Access via a constant value executes faster: Example:

var1 = var.3
var.3 = Expression

dim a,b as byte
dim c as word
dim s as string
c=&ha1b2      ' Assign value, Hexa decimal (lie in reverse order in memory, Hex always Big-endian)
a=c.LowByte   ' read low Byte of the variable value, result: &hb2
b=c.HighByte  ' read High-Byte of the variable value, result: &ha1
c.LowByte=b   ' reverse and write
c.HighByte=a
c.0=1         'set Bit 0 in c
a=b.7         'read Bit 7 of b
a=3
c=b.a         ' read Bit 3 of b, Bit number is in a
Print "&h"+hex(c)  ' Display: &hb2a1
s = "Hallo"        ' assign text
a = s.ByteValue(1) ' Read decimal value of the 1. character of the string

See also

¹⁾ All numeric data types

²⁾ only long, single

³⁾ , ⁴⁾ only word, integer

⁵⁾ , ⁶⁾ only long, longint, single

⁷⁾ only long, longint, integer, word

⁸⁾ All numeric data types and structures. The start address of Arrays

⁹⁾ relevant to the memory block in which the variable lies, RAM or eeprom.

¹⁰⁾ The intrinsic data type string, memoryblock

Variables

Dimensioning

Methods/Attributes

User defined Data Types

String and MemoryBlock

Usage

Accessing individual Bits of a variable

Example